172461795072 has 144 divisors (see below), whose sum is σ = 541493471232. Its totient is φ = 47685242880.

The previous prime is 172461795029. The next prime is 172461795073. The reversal of 172461795072 is 270597164271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172461795073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350763 + ... + 684074.

It is an arithmetic number, because the mean of its divisors is an integer number (3760371328).

Almost surely, 2^172461795072 is an apocalyptic number.

172461795072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172461795072 is an abundant number, since it is smaller than the sum of its proper divisors (369031676160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172461795072 is a wasteful number, since it uses less digits than its factorization.

172461795072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034894 (or 1034880 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 51.

The spelling of 172461795072 in words is "one hundred seventy-two billion, four hundred sixty-one million, seven hundred ninety-five thousand, seventy-two".